You can start your own business, and work for yourself, and make pretty good money, if you have a tractor to use, and trailer to pull it with. Without having researched the market to see if there would be lots of potential customers. Get to know other people, preferably those who have been through the experience and have established great businesses. Anything and everything can go viral instantly, and all kinds of marketing strategies, company campaigns, latest innovations in the business, etc., can be uploaded instantly.
The example here is that a plumber who caters to the lower end of the economic market would use more print media and posters to advertise the business, while a plumber catering to an upper market segment may elect to use social media more since richer people have smartphones and will be reachable using digital platforms.
Look for a cheap HP Desktop computer for around $150 and Internet high-speed modem with excellent service at $60 to get started. There is a lot of information available on the Internet about building a new business but a lot of it is hard to follow unless you already have some business skills.
Such a kind of business model is sometimes also known as network marketing. We see it everyday as people get gung-ho about opening up a company and then one small negative thing happens and they abandon all the plans they have put in place. The extra money can also be used for advertisement and marketing purposes.
So get your creativity working and find out which marketing plan best suits your business. You can use it to acquire new customers, to reach out to existing customers, and you can also use it as a platform to start various new marketing campaigns. Do make sure, however, that the company which has retained you has provided you with the rights to participate virtually on their behalf.